1 files changed, 46 insertions, 6 deletions

diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index de3ac58fceec..f17383e76eb7 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -644,7 +644,7 @@ static int init_aliasing_ppgtt(struct i915_ggtt *ggtt)
 	struct i915_ppgtt *ppgtt;
 	int err;
 
-	ppgtt = i915_ppgtt_create(ggtt->vm.gt);
+	ppgtt = i915_ppgtt_create(ggtt->vm.gt, 0);
 	if (IS_ERR(ppgtt))
 		return PTR_ERR(ppgtt);
 
@@ -727,7 +727,6 @@ static void ggtt_cleanup_hw(struct i915_ggtt *ggtt)
 
 	atomic_set(&ggtt->vm.open, 0);
 
-	rcu_barrier(); /* flush the RCU'ed__i915_vm_release */
 	flush_workqueue(ggtt->vm.i915->wq);
 
 	mutex_lock(&ggtt->vm.mutex);
@@ -814,6 +813,21 @@ static unsigned int chv_get_total_gtt_size(u16 gmch_ctrl)
 	return 0;
 }
 
+static unsigned int gen6_gttmmadr_size(struct drm_i915_private *i915)
+{
+	/*
+	 * GEN6: GTTMMADR size is 4MB and GTTADR starts at 2MB offset
+	 * GEN8: GTTMMADR size is 16MB and GTTADR starts at 8MB offset
+	 */
+	GEM_BUG_ON(GRAPHICS_VER(i915) < 6);
+	return (GRAPHICS_VER(i915) < 8) ? SZ_4M : SZ_16M;
+}
+
+static unsigned int gen6_gttadr_offset(struct drm_i915_private *i915)
+{
+	return gen6_gttmmadr_size(i915) / 2;
+}
+
 static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size)
 {
 	struct drm_i915_private *i915 = ggtt->vm.i915;
@@ -822,8 +836,8 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size)
 	u32 pte_flags;
 	int ret;
 
-	/* For Modern GENs the PTEs and register space are split in the BAR */
-	phys_addr = pci_resource_start(pdev, 0) + pci_resource_len(pdev, 0) / 2;
+	GEM_WARN_ON(pci_resource_len(pdev, 0) != gen6_gttmmadr_size(i915));
+	phys_addr = pci_resource_start(pdev, 0) + gen6_gttadr_offset(i915);
 
 	/*
 	 * On BXT+/ICL+ writes larger than 64 bit to the GTT pagetable range
@@ -910,6 +924,7 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
 		size = gen8_get_total_gtt_size(snb_gmch_ctl);
 
 	ggtt->vm.alloc_pt_dma = alloc_pt_dma;
+	ggtt->vm.lmem_pt_obj_flags = I915_BO_ALLOC_PM_EARLY;
 
 	ggtt->vm.total = (size / sizeof(gen8_pte_t)) * I915_GTT_PAGE_SIZE;
 	ggtt->vm.cleanup = gen6_gmch_remove;
@@ -1373,13 +1388,28 @@ err_st_alloc:
 }
 
 static struct scatterlist *
-remap_pages(struct drm_i915_gem_object *obj, unsigned int offset,
+remap_pages(struct drm_i915_gem_object *obj,
+	    unsigned int offset, unsigned int alignment_pad,
 	    unsigned int width, unsigned int height,
 	    unsigned int src_stride, unsigned int dst_stride,
 	    struct sg_table *st, struct scatterlist *sg)
 {
 	unsigned int row;
 
+	if (alignment_pad) {
+		st->nents++;
+
+		/*
+		 * The DE ignores the PTEs for the padding tiles, the sg entry
+		 * here is just a convenience to indicate how many padding PTEs
+		 * to insert at this spot.
+		 */
+		sg_set_page(sg, NULL, alignment_pad * 4096, 0);
+		sg_dma_address(sg) = 0;
+		sg_dma_len(sg) = alignment_pad * 4096;
+		sg = sg_next(sg);
+	}
+
 	for (row = 0; row < height; row++) {
 		unsigned int left = width * I915_GTT_PAGE_SIZE;
 
@@ -1439,6 +1469,7 @@ intel_remap_pages(struct intel_remapped_info *rem_info,
 	struct drm_i915_private *i915 = to_i915(obj->base.dev);
 	struct sg_table *st;
 	struct scatterlist *sg;
+	unsigned int gtt_offset = 0;
 	int ret = -ENOMEM;
 	int i;
 
@@ -1455,10 +1486,19 @@ intel_remap_pages(struct intel_remapped_info *rem_info,
 	sg = st->sgl;
 
 	for (i = 0 ; i < ARRAY_SIZE(rem_info->plane); i++) {
-		sg = remap_pages(obj, rem_info->plane[i].offset,
+		unsigned int alignment_pad = 0;
+
+		if (rem_info->plane_alignment)
+			alignment_pad = ALIGN(gtt_offset, rem_info->plane_alignment) - gtt_offset;
+
+		sg = remap_pages(obj,
+				 rem_info->plane[i].offset, alignment_pad,
 				 rem_info->plane[i].width, rem_info->plane[i].height,
 				 rem_info->plane[i].src_stride, rem_info->plane[i].dst_stride,
 				 st, sg);
+
+		gtt_offset += alignment_pad +
+			      rem_info->plane[i].dst_stride * rem_info->plane[i].height;
 	}
 
 	i915_sg_trim(st);